PMID- 23181987 OWN - NLM STAT- MEDLINE DCOM- 20130305 LR - 20220330 IS - 1349-7006 (Electronic) IS - 1347-9032 (Print) IS - 1347-9032 (Linking) VI - 104 IP - 1 DP - 2013 Jan TI - Bacillus Calmette-Guerin (BCG) immunotherapy for bladder cancer: current understanding and perspectives on engineered BCG vaccine. PG - 22-7 LID - 10.1111/cas.12075 [doi] AB - Since the first report in 1976, accumulated clinical evidence has supported intravesical Bacillus Calmette-Guerin (BCG) therapy as one of the standard methods of management of intermediate- and high-risk non-muscle invasive bladder cancer. Despite its efficacy, intravesical BCG therapy is associated with a variety of adverse events (AEs), most of which are tolerable or controllable with supportive care. However, some patients receiving intravesical BCG therapy may experience uncommon but severe AEs, leading to cessation of BCG therapy. Not all, but most severe AEs result from either local or systemic infection with live BCG. Intravesical instillation of BCG elicits multiple immune reactions, although the precise immunological mechanism of BCG therapy is not clear. It is convenient to separate the complex reactions into the following three categories: infection of urothelial cells or bladder cancer cells, induction of immune reactions, and induction of antitumor effects. Recently, our knowledge about each category has increased. Based on this understanding, predictors of the efficacy of intravesical BCG therapy, such as urinary cytokine measurement and cytokine gene polymorphism, have been investigated. Recently, preclinical studies using a novel engineered mycobacterium vaccine have been conducted to overcome the limitations of BCG therapy. One approach is Th1 cytokine-expressing recombinant forms of BCG; another approach is development of non-live bacterial agents to avoid AEs due to live BCG infection. We also briefly describe our approach using an octaarginine-modified liposome-incorporating BCG cell wall component to develop future substitutes for live BCG. CI - (c) 2012 Japanese Cancer Association. FAU - Kawai, Koji AU - Kawai K AD - Department of Urology, Faculty of Medicine, University of Tsukuba, Tokyo, Japan. rkawa@md.tsukuba.ac.jp FAU - Miyazaki, Jun AU - Miyazaki J FAU - Joraku, Akira AU - Joraku A FAU - Nishiyama, Hiroyuki AU - Nishiyama H FAU - Akaza, Hideyuki AU - Akaza H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20130103 PL - England TA - Cancer Sci JT - Cancer science JID - 101168776 RN - 0 (BCG Vaccine) RN - 0 (Liposomes) RN - 0 (Vaccines, Synthetic) SB - IM MH - Administration, Intravesical MH - BCG Vaccine/adverse effects/immunology/*therapeutic use MH - Humans MH - *Immunotherapy/adverse effects MH - Liposomes MH - Mycobacterium bovis/immunology MH - Urinary Bladder Neoplasms/immunology/*therapy MH - Urothelium/microbiology/pathology MH - Vaccines, Synthetic/adverse effects/immunology/therapeutic use PMC - PMC7657210 EDAT- 2012/11/28 06:00 MHDA- 2013/03/06 06:00 PMCR- 2013/01/01 CRDT- 2012/11/28 06:00 PHST- 2012/10/28 00:00 [received] PHST- 2012/11/18 00:00 [accepted] PHST- 2012/11/28 06:00 [entrez] PHST- 2012/11/28 06:00 [pubmed] PHST- 2013/03/06 06:00 [medline] PHST- 2013/01/01 00:00 [pmc-release] AID - CAS12075 [pii] AID - 10.1111/cas.12075 [doi] PST - ppublish SO - Cancer Sci. 2013 Jan;104(1):22-7. doi: 10.1111/cas.12075. Epub 2013 Jan 3.