Naurin Lalani

1 Introduction In the 21st century, cancer has emerged as a prominent cause of mortality across the globe [1, 2]. Cancer treatments either include radiation therapy or chemotherapy, which have significant adverse effects on the health of the patient and the cells can become resistant to cancer medications [3-5].

In the realm of therapeutic peptides, tremendous progress has been achieved in the last two decades. The building block of peptides that is, ‘Amino Acid’ has been modified by various chemical modifications such as side-chain alteration in linear peptides, cyclization, back-bone modification, pro-drug moiety, conjugation with heterocycles, and natural products to make peptides a foremost candidate as a therapeutic drug.