Medical Genetics Commons^™

Use Of Pharmacogenomics In Mtm Services, Molly Kulp, Halle Orlinski, Zachary R. Jones, Zachary Crawford, David Kisor

Pharmacy and Wellness Review

Incorporation of pharmacogenomic data into Medication Therapy Management (MTM) allows pharmacists to optimize treatment regimens for patients leading to better overall outcomes. Utilizing pharmacogenomics makes it easier for health care professionals to initiate medication regimens with reduced adverse reactions, improves outcomes due to specialized dosing and therapies and allows the treatment process to be as cost-effective as possible for the patient. Pharmacists have an opportunity to educate the rest of the health care team on issues such as: which ethnicities possess higher odds of carrying certain genetic variants, the most common or most relevant medications that can have variable effects …

The Impact Of Pharmacogenomics On Chemotherapeutic Drug Development And Use, Lara Long, Amy Pasternak, Ellen Hazelet, David Kisor

Pharmacy and Wellness Review

Cancer therapy is largely dependent on general treatment guidelines, and patients undergoing chemotherapy often experience treatment failure with standard drugs. The development of individualized drug therapy through pharmacogenomics has the potential to enhance chemotherapy regimen selection and improve patient outcomes. Antineoplastic agents such as cetuximab and trastuzumab are effective in treating cancers possessing specific genetic biomarker characteristics. Patients need to undergo genetic testing before these agents are administered to ensure appropriate use. Cetuximab has been shown to improve outcomes in metastatic colorectal cancers and head and neck squamous cell carcinomas positive for EGFR. Trastuzumab has shown benefit in human epidermal …

The Pharmacogenetics Of Opioid Pain Management, Maryanne Ventura, Lauren Desko, Kimberly Gathers, Ashley Overy, David Kisor

Pharmacy and Wellness Review

High rates of interpatient variability in drug metabolism and drug response for nearly all medications lead to the hypothesis that assessment of an individual patient's genotype with respect to their ability metabolize certain drugs can be a useful tool in predicting a patient's responsiveness to certain medications. Evaluating patients using pharmacogenomics as a basis for assessment could allow pharmacists to decide which treatment options would be most efficacious in a given patient and, thereby, have significant impact in the clinical setting. This holds true especially in the case of prodrugs, which require in vivo activation to an active or more …

Preparing For The Genomic Age: Thiopurine S-Methytransferase Polymorphism, Hilary Stewart, Lisa Berni, Tyler Bulcher, Joel Rittenhouse, Ryan W. Naseman

Pharmacy and Wellness Review

Interpatient variability among medication doses has been a long-standing obstacle for many prescribers. Some medications result in increased morbidity and mortality in a small percentage of the population. For many years, the cause of such toxicities was unknown. This mystery has been resolved by the discovery that the abscence or abnormality of specific genes that code for receptros, drug-treated proteins, drug transport mechanisms, and drug metabolizing enzymes could alter how an affected individual will respond to a given drug. One such incidence is the genetic polymorphism in thiopurine s-methytransferase (TPMT). In comprehending the mechanism of this polymorphism, it is important …

The Pharmabiotic For Phenylketonuria: Development Of A Novel Therapeutic, Chloé Elizabeth Lebegue

Senior Theses

Phenylketonuria, now known as phenylalanine hydroxylase (PAH) deficiency, is a genetic disorder of metabolism affecting approximately one in every 15,000 infants born in the United States. Patients have nonfunctional PAH enzyme secondary to one or more genetic mutations. The enzyme deficit results in destructive supraphysiologic blood phenylalanine levels upon consumption of the essential dietary amino acid phenylalanine. Current standards of care mitigate signs and symptoms of the disorder, but do not approach a cure. The methods for creating a prototype pharmabiotic as an innovative treatment strategy for PAH deficiency are described herein.

DNA molecular cloning techniques were utilized to engineer …

Innovation And Competition In Advanced Therapy Medicinal Products, Enrique Seoane-Vazquez, Vaishali Shukla, Rosa Rodriguez-Monguio

Pharmacy Faculty Articles and Research

"Advanced therapy medicinal products (ATMPs), including gene therapy, cell therapy, and tissue engineering products, represent a paradigm shift in health care as they have great potential for preventing and treating many diseases (Food and Drug Administration (FDA), 2013). By way of example, only 367 (8.0%) of the 4,603 rare diseases and conditions listed by the NIH Genetic and Rare Diseases Information Center had at least one FDA-approved drug therapy in early 2018. An estimated 3,038 (66.0%) of those rare diseases and conditions are congenital and genetic diseases that could potentially be treated by gene therapy. There are already ATMPs under …

Somatic Mutation Detection In Leukemia-Derived Circulating Dna: Utility In Monitoring Clonal Dynamics And Disease Response In Pediatric Acute Lymphoblastic Leukemia, Sarah Hisham Abdelaziz Youssef

Theses and Dissertations (ETD)

Despite the improved outcome associated with current treatment strategies ofpediatric acute lymphoblastic leukemia (ALL), relapse still represents a major challenge. Pediatric ALL demonstrates branched evolution in response to selective pressure exerted by therapy; relapse founder clones emerge from pre-leukemic clones or minor subclones present at diagnosis. It is hence crucial to develop biomarkers capable of tracking subclones throughout therapy. Current practices for monitoring disease response in leukemia rely on the analysis of BM biopsy sample at specific time points throughout therapy. Not only the invasiveness of the BM biopsy hinders the sequential sampling, but also, the currently implied techniques are …

Novel Combination Bmp7 And Hgf Gene Therapy Instigates Selective Myofibroblast Apoptosis And Reduces Corneal Haze In Vivo, Suneel Gupta, Michael K. Fink, Arkasubhra Ghosh, Ratnakar Tripathi, Prashant R. Sinha, Ajay Sharma, Nathan P. Hesemann, Shyam S. Chaurasia, Elizabeth A. Giuliano, Rajiv R. Mohan

Pharmacy Faculty Articles and Research

PURPOSE. We tested the potential of bone morphogenic protein 7 (BMP7) and hepatocyte growth factor (HGF) combination gene therapy to treat preformed corneal fibrosis using established rabbit in vivo and human in vitro models.

METHODS. Eighteen New Zealand White rabbits were used. Corneal fibrosis was produced by alkali injury. Twenty-four hours after scar formation, cornea received topically either balanced salt solution (BSS; n ¼ 6), polyethylenimine-conjugated gold nanoparticle (PEI2-GNP)-naked plasmid (n ¼ 6) or PEI2-GNP plasmids expressing BMP7 and HGF genes (n ¼ 6). Donor human corneas were used to obtain primary human corneal fibroblasts and myofibroblasts for mechanistic studies. …

Fasudil In Combination With Bone Marrow Stromal Cells (Bmscs) Attenuates Alzheimer’S Disease-Related Changes Through The Regulation Of The Peripheral Immune System, Jiezhong Yu, Yuqing Yan, Qingfang Gu, Gajendra Kumar, Hongqiang Yu, Yijin Zhao, Chunyun Liu, Ye Gao, Zhi Chai, Jasleen Chumber, Bao-Guo Xiao, Guang-Xian Zhang, Han-Ting Zhang, Yuqiang Jiang, Cun-Gen Ma

Faculty & Staff Scholarship

Alzheimer’s disease (AD) is a chronic progressive neurodegenerative disease. Its mechanism is still not clear. Majority of research focused on the central nervous system (CNS) changes, while few studies emphasize on peripheral immune system modulation. Our study aimed to investigate the regulation of the peripheral immune system and its relationship to the severity of the disease after treatment in an AD model of APPswe/PSEN1dE9 transgenic (APP/PS1 Tg) mice. APP/PS1 Tg mice (8 months old) were treated with the ROCK-II inhibitor 1-(5-isoquinolinesulfonyl)- homo-piperazine (Fasudil) (intraperitoneal (i.p.) injections, 25 mg/kg/day), bone marrow stromal cells (BMSCs; caudal vein injections, 1 × 106 BMSCs …

Design And Evaluation Of Gemini Surfactant-Based Lipoplexes Modified With Cell-Binding Peptide For Targeted Gene Therapy, Waleed Mohammed-Saeid, Rania Soudy, Richa Tikoo, Kamaljit Kaur, Ronald E. Verrall, Ildiko Badea

Pharmacy Faculty Articles and Research

Purpose Achieving successful gene therapy requires delivery of a gene vector specifically to the targeted tissue with efficient expression and a good safety profile. The objective of this work was to develop, characterize and determine if a novel gemini surfactant-based lipoplex systems, modified with a cancer-targeting peptide p18-4, could serve this role. Methods The targeting peptide p18-4 was either chemically coupled to a gemini surfactant backbone or physically co-formulated with the lipoplexes. The influence of targeting ligand and formulation strategies on essential physicochemical properties of the lipoplexes was evaluated by dynamic light scattering and small angle X-ray scattering techniques. In …

Difatty Acyl-Conjugated Linear And Cyclic Peptides For Sirna Delivery, Hung Do, Meenakshi Sharma, Naglaa Salem El-Sayed, Parvin Mahdipoor, Emira Bousoik, Keykavous Parang, Hamidreza Montazeri Aliabadi

Pharmacy Faculty Articles and Research

A number of amphiphilic difatty acyl linear and cyclic R5K2 peptide conjugates were synthesized by solid-phase peptide methods to enhance the interaction with the hydrophobic cellular phospholipid bilayer and to improve siRNA delivery and silencing. Binding to siRNA molecules was significantly less for the cyclic peptide conjugates. A gradual decrease was observed in the particle size of the complexes with increasing peptide/siRNA ratio for most of the synthesized peptides, suggesting the complex formation. Most of the complexes showed a particle size of less than 200 nm, which is considered an appropriate size for in vitro siRNA delivery. A number of …

The Influence Of A Kdt501, A Novel Isohumulone, On Adipocyte Function In Humans, Brian S. Finlin, Beibei Zhu, Bernard P. Kok, Cristina Godio, Philip M. Westgate, Neile Grayson, Robert Sims, Jeffrey S. Bland, Enrique Saez, Philip A. Kern

Internal Medicine Faculty Publications

Objective: In a phase II clinical trial in nine obese, insulin-resistant humans, we observed that treatment with KDT501, a novel isohumulone drug, increased total and high-molecular weight (HMW) adiponectin in plasma. The objective was to determine whether KDT501 increased adiponectin secretion from subcutaneous white adipose tissue (SC WAT) and the underlying mechanism(s).

Methods: Nine obese participants with either prediabetes or with normal glucose tolerance plus three features of metabolic syndrome were part of the study. SC WAT biopsies were performed before and after 28 days of KDT501 treatment in a clinical research setting. In addition, a cold stimulus was used …

Examining The Influence And Role Of Pharmacogenetics Among Children With Autism Spectrum Disorder, Nuha Shaker

Masters Theses & Specialist Projects

Pharmacogenetics is the study of genomic-guided individualized drug prescription that plays an important role in preventing the severe adverse effects of drugs, decreasing the time and cost of therapeutic choices, and directing healthcare professionals to choose medications that are effective and safe. It is noteworthy that this approach becomes highly beneficial in patients suffering from chronic diseases or disorders, since these conditions may require multiple and long term pharmacological therapies, as in children with autism spectrum disorder (ASD). However, public acceptance is a major challenge when implementation of pharmacogenetics merges into clinical practice. The purpose of this study is a) …

Activity Of Distinct Growth Factor Receptor Network Components In Breast Tumors Uncovers Two Biologically Relevant Subtypes, Moom Roosan, Shelley M. Macneil, David F. Jenkins, Gajendra Shrestha, Sydney R. Wyatt, Jasmine A. Mcquerry, Stephen R. Piccolo, Laura M. Heiser, Joe W. Gray, W. Evan Johnson, Andrea H. Bild

Pharmacy Faculty Articles and Research

Background
The growth factor receptor network (GFRN) plays a significant role in driving key oncogenic processes. However, assessment of global GFRN activity is challenging due to complex crosstalk among GFRN components, or pathways, and the inability to study complex signaling networks in patient tumors. Here, pathway-specific genomic signatures were used to interrogate GFRN activity in breast tumors and the consequent phenotypic impact of GRFN activity patterns.

Methods
Novel pathway signatures were generated in human primary mammary epithelial cells by overexpressing key genes from GFRN pathways (HER2, IGF1R, AKT1, EGFR, KRAS (G12V), RAF1, BAD). The pathway analysis toolkit Adaptive Signature Selection …

Regulation Of Polycystin-1 Function By Calmodulin Binding, Nicholas Doerr, Yidi Wang, Kevin R. Kipp, Guangyi Liu, Jesse J. Benza, Vladimir Pletnev, Tengis S. Pavlov, Alexander Staruschenko, Ashraf M. Mohieldin, Maki Takahashi, Surya M. Nauli, Thomas Weimbs

Pharmacy Faculty Articles and Research

Autosomal Dominant Polycystic Kidney Disease (ADPKD) is a common genetic disease that leads to progressive renal cyst growth and loss of renal function, and is caused by mutations in the genes encoding polycystin-1 (PC1) and polycystin-2 (PC2), respectively. The PC1/PC2 complex localizes to primary cilia and can act as a flow-dependent calcium channel in addition to numerous other signaling functions. The exact functions of the polycystins, their regulation and the purpose of the PC1/PC2 channel are still poorly understood. PC1 is an integral membrane protein with a large extracytoplasmic N-terminal domain and a short, ~200 amino acid C-terminal cytoplasmic tail. …

Gene Delivery Using Calcium Phosphate Nanoparticles: Optimization Of The Transfection Process And The Effects Of Citrate And Poly(L-Lysine) As Additives, Mohammed A. Khan, Victoria M. Wu, Shreya Ghosh, Vuk Uskoković

Pharmacy Faculty Articles and Research

Despite the long history of nanoparticulate calcium phosphate (CaP) as a non-viral transfection agent, there has been limited success in attempts to optimize its properties for transfection comparable in efficiency to that of viral vectors. Here we focus on the optimization of: (a) CaP nanoparticle precipitation conditions, predominantly supersaturation and Ca/P molar ratios; (b) transfection conditions, mainly the concentrations of the carrier and plasmid DNA; (c) the presence of surface additives, including citrate anion and cationic poly(l-lysine) (PLL). CaP nanoparticles significantly improved transfection with plasmid DNA encoding enhanced green fluorescent protein (eGFP) in pre-osteoblastic MC3T3-E1 cells compared to a commercial …

Hiv Vaccines: Progress, Limitations And A Crispr/Cas9 Vaccine, Omar A. Garcia Martinez

Biology: Student Scholarship & Creative Works

ABSTRACT: The HIV-1 pandemic continues to thrive due to ineffective HIV-1 vaccines. Historically, the world’s most infectious diseases, such as polio and smallpox, have been eradicated or have come close to eradication due to the advent of effective vaccines. Highly active antiretroviral therapy is able to delay the onset of AIDS but can neither rid the body of HIV-1 proviral DNA nor prevent further transmission. A prophylactic vaccine that prevents the various mechanisms HIV-1 has to evade and attack our immune system is needed to end the HIV-1 pandemic. Recent advances in engineered nuclease systems, like the CRISPR/Cas9 system, have …

Identification Of Potential Drug Targets In Cancer Signaling Pathways Using Stochastic Logical Models, Peican Zhu, Hamidreza Montazeri Aliabadi, Hasan Uludag, Jie Han

Pharmacy Faculty Articles and Research

The investigation of vulnerable components in a signaling pathway can contribute to development of drug therapy addressing aberrations in that pathway. Here, an original signaling pathway is derived from the published literature on breast cancer models. New stochastic logical models are then developed to analyze the vulnerability of the components in multiple signalling sub-pathways involved in this signaling cascade. The computational results are consistent with the experimental results, where the selected proteins were silenced using specific siRNAs and the viability of the cells were analyzed 72 hours after silencing. The genes elF4E and NFkB are found to have nearly no …

Capillary Endothelia From Two Adpkd Patients Are Polyploidy, Sarmed H. Kathem, Wissam A. Aboualaiwi, Xiaolin Zi, Surya M. Nauli

Pharmacy Faculty Articles and Research

Bilateral renal cyst formation is the main feature of autosomal dominant polycystic kidney disease (ADPKD). We and other laboratories have previously shown that cystlining epithelia of kidneys from ADPKD patients are characterized by polyploidy. In this report, we show that endothelia from the renal capillary beds of two ADPKD patients are also polyploidy. Spectral karyotyping study further confirms our flow cytometry analyses. We suggest that polyploidy may be used as a potential cellular marker in ADPKD.

Pharmacists And Pharmacogenomics: An Evaluation Of Knowledge, Beliefs, Attitudes And Practices, Laressa Bethishou, Angela Chen, Chrissie Chew, Richard Dang, Courtney Greenber, Rebecca Ashlee Klevens, Vlada Treynker, Andrew Warnock, Melissa Durham, Jeffery A. Goad, Edith Mirzaian

Jeff Goad

"Pharmacogenomics is the term used to describe the rapidly advancing study on how genetic makeup can impact drug therapy. In specialized clinical situations, such as the use of irinotecan in colon cancer or abacavir in HIV infections, it is now possible to identify specific genotypes that correlate strongly with a patient's therapeutic outcome, with implications on both efficacy and side effects. On a broader scale, a systematic review published by the Journal of the American Medical Association on the top 27 adverse reaction-causing drugs found that a majority of the adverse effects have a genetic component, suggesting that an analysis …

Childhood Obesity And Familial Hypercholesterolemia: Genetic Diseases That Contribute To Cardiovascular Disease, Alyssa Caudle

Senior Honors Theses

Childhood obesity occurs as the result of an imbalance between caloric intake and energy expenditure. Genetic risk factors for obesity have become an area of research due to its permanency. Mutated genes such as Fat Mass and Obesity Associated (FTO), Leptin (LEP), Leptin Receptor (LEPR), Melanocortin 4 Receptor (MC4R), Adiponectin C1Q and Collagen Domain Containing (ADIPOQ), Proprotein Convertase Subtilisin/Kexin Type 1 (PCSK1), and Peroxisome Proliferator-Activated Receptor Gamma (PPARG) all contribute to the development of childhood obesity. In the presence of high cholesterol caused by obesity, the genetic condition known as familial hypercholesterolemia is exacerbated. Familial hypercholesterolemia is caused by a …

Phosphatidylinositol 3-Kinase (Pi3k) As A Therapeutic Target In Nsclc, Christopher W. Stamatkin

Theses and Dissertations--Pharmacy

Deregulated activation of phosphatidylinositol 3-kinase (PI3K) pathway is central to many human malignancies. The functions of this pathway are critical for normal cell metabolism, proliferation, and survival. In lung cancers, the PI3K pathway activity is often aberrantly driven by multiple mutations, including EGFR, KRAS, and PIK3CA. Molecules targeting the PI3K pathway are intensely investigated as potential anti-cancer agents. Although inhibitors of the pathway are currently in clinical trials, rational and targeted use of these compounds, alone or in combination, requires an understanding of isoform-specific activity in context. We sought to identify class IA PI3K enzyme (p110a/PIK3CA, p110b/PIK3CB, p110d/PIK3CD) activities using …

Pharmacists And Pharmacogenomics: An Evaluation Of Knowledge, Beliefs, Attitudes And Practices, Laressa Bethishou, Angela Chen, Chrissie Chew, Richard Dang, Courtney Greenber, Rebecca Ashlee Klevens, Vlada Treynker, Andrew Warnock, Melissa Durham, Jeffery A. Goad, Edith Mirzaian

Pharmacy Faculty Articles and Research

"Pharmacogenomics is the term used to describe the rapidly advancing study on how genetic makeup can impact drug therapy. In specialized clinical situations, such as the use of irinotecan in colon cancer or abacavir in HIV infections, it is now possible to identify specific genotypes that correlate strongly with a patient's therapeutic outcome, with implications on both efficacy and side effects. On a broader scale, a systematic review published by the Journal of the American Medical Association on the top 27 adverse reaction-causing drugs found that a majority of the adverse effects have a genetic component, suggesting that an analysis …

Bsa Nanoparticles For Sirna Delivery: Coating Effects On Nanoparticle Properties, Plasma Protein Adsorption, And In Vitro Sirna Delivery, Haran Yogasundaram, Markian Stephan Bahniuk, Harsh-Deep Singh, Hamidreza Montazeri Aliabadi, Hasan Uludag, Larry David Unsworth

Pharmacy Faculty Articles and Research

Developing vehicles for the delivery of therapeutic molecules, like siRNA, is an area of active research. Nanoparticles composed of bovine serum albumin, stabilized via the adsorption of poly-L-lysine (PLL), have been shown to be potentially inert drug-delivery vehicles. With the primary goal of reducing nonspecific protein adsorption, the effect of using comb-type structures of poly(ethylene glycol) (1 kDa, PEG) units conjugated to PLL (4.2 and 24 kDa) on BSA-NP properties, apparent siRNA release rate, cell viability, and cell uptake were evaluated. PEGylated PLL coatings resulted in NPs with ζ-potentials close to neutral. Incubation with platelet-poor plasma showed the composition of …

Structural Properties Of Thermoresponsive Poly(N-Isopropylacrylamide)-Poly(Ethyleneglycol) Microgels, J. Clara-Rahola, A. Fernandez-Nieves, B. Sierra-Martin, A. B. South, L. Andrew Lyon, J. Kohlbrecher, A. F. Barbero

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

The application of RNA interference to treat disease is an important yet challenging concept in modern medicine. In particular, small interfering RNA (siRNA) have shown tremendous promise in the treatment of cancer. However, siRNA show poor pharmacological properties, which presents a major hurdle for effective disease treatment especially through intravenous delivery routes. In response to these shortcomings, a variety of nanoparticle carriers have emerged, which are designed to encapsulate, protect, and transport siRNA into diseased cells. To be effective as carrier vehicles, nanoparticles must overcome a series of biological hurdles throughout the course of delivery. As a result, one promising …

Reduction Of Sympathetic Activity Via Adrenal-Targeted Grk2 Gene Deletion Attenuates Heart Failure Progression And Improves Cardiac Function After Myocardial Infarction., Anastasios Lymperopoulos, Giuseppe Rengo, Erhe Gao, Steven N. Ebert, Gerald W. Dorn, Walter J. Koch

Department of Medicine Faculty Papers

Chronic heart failure (HF) is characterized by sympathetic overactivity and enhanced circulating catecholamines (CAs), which significantly increase HF morbidity and mortality. We recently reported that adrenal G protein-coupled receptor kinase 2 (GRK2) is up-regulated in chronic HF, leading to enhanced CA release via desensitization/down-regulation of the chromaffin cell alpha(2)-adrenergic receptors that normally inhibit CA secretion. We also showed that adrenal GRK2 inhibition decreases circulating CAs and improves cardiac inotropic reserve and function. Herein, we hypothesized that adrenal-targeted GRK2 gene deletion before the onset of HF might be beneficial by reducing sympathetic activation. To specifically delete GRK2 in the chromaffin cells …

Chemosensitization Of Cancer Cells By Sirna Using Targeted Nanogel Delivery, Erin B. Dickerson, William H. Blackburn, Michael H. Smith, Laura B. Kapa, L. Andrew Lyon, John F. Mcdonald

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Background: Chemoresistance is a major obstacle in cancer treatment. Targeted therapies that enhance cancer cell sensitivity to chemotherapeutic agents have the potential to increase drug efficacy while reducing toxic effects on untargeted cells. Targeted cancer therapy by RNA interference (RNAi) is a relatively new approach that can be used to reversibly silence genes in vivo by selectively targeting genes such as the epidermal growth factor receptor (EGFR), which has been shown to increase the sensitivity of cancer cells to taxane chemotherapy. However, delivery represents the main hurdle for the broad development of RNAi therapeutics.

Methods: We report here …

Ppar Agonists Down-Regulate The Expression Of Atp10c Mrna During Adipogenesis, A Peretich, Maria Cekanova Ms, Rndr, Phd, S Hurst, Sj Baek, Madhu Dahr

Faculty Publications and Other Works -- Biochemistry, Cellular and Molecular Biology

No abstract provided.

Ppar Agonists Down-Regulate The Expression Of Atp10c Mrna During Adipogenesis, A Peretich, Maria Cekanova Ms, Rndr, Phd, S Hurst, Sj Baek, Madhu Dahr

Maria Cekanova MS, RNDr, PhD

No abstract provided.

Right-Handed 14-Helix In Β3-Peptides From L-Aspartic Acid Monomers, Kamaljit Kaur, Tara Sprules, Wael Soliman, Reem Beleid, Sahar Ahmed

Pharmacy Faculty Articles and Research

β-Peptides made from L-aspartic acid monomers form a new class of β³-peptides. Here we report the first three-dimensional NMR solution structure of a β³-hexapeptide (1) from L-aspartic acid monomers in 2,2,2-trifluoroethanol (TFE). We show that 1 forms a right-handed 14-helical structure in TFE. α-peptides from naturally occurring L-amino acids adopt a right-handed α-helix whereas β³-peptides formed from β³-amino acids derived from naturally occurring L-amino acids form left-handed 14-helices. The right-handed 14-helical conformation of 1 is a better mimic of α-peptide conformations. Using the NMR structure of 1 in TFE, we …