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Custom Algal Strain Development

Algal Metabolic Engineering Services

We engineer phototrophic microalgae to redirect carbon flux toward your target product — from lipids and carotenoids to recombinant proteins.

  • Proven host systems: Chlamydomonas reinhardtii and Nannochloropsis spp.
  • End-to-end service: transformation, screening, photobioreactor cultivation.
  • Stable, high-producing strains with genetic stability assessment

Turnkey Pathway Engineering

From design to engineered strain — we manage transformation, clone selection, and phototrophic production under controlled conditions.

  • Designer construct design (codon-optimized, strong promoters, selection markers)
  • Transformation via glass‑bead, electroporation, or Agrobacterium‑mediated.
  • Iterative screening for stable, high‑yield clones
Chlamydomonas
Nannochloropsis
Custom Algae
Our Approach

Integrated Algal Engineering Platform

We combine pathway design, transformation, phototrophic cultivation, and analytical chemistry to deliver custom strains tailored to your target molecule.

Pathway Design & Construct Assembly

Our team designs genetic constructs to overexpress, knock down, or knock in key metabolic genes. We codon‑evaluate for algal hosts and use validated promoters, terminators, and selection markers.

  • Target pathway analysis (lipid, carotenoid, protein, or small‑molecule)
  • Custom plasmid design with synthetic biology modules
  • In‑silico off‑target evaluation for CRISPR‑based edits

Transformation & Clone Screening

We deliver stable transformants in phototrophic hosts. Screening includes antibiotic selection, fluorescence‑activated cell sorting (FACS) or microtiter‑plate assays to identify high‑producers.

  • Multiple transformation methods (electroporation, glass‑bead, Agrobacterium)
  • High‑throughput clone isolation and genotyping (PCR, qPCR, Southern)
  • Phenotypic screening for target product accumulation

Controlled Phototrophic Cultivation

Engineered strains are grown in photobioreactors or shake flasks under defined light, CO₂, and nutrient regimes to evaluate product yield.

Product Quantification & Analytics

We measure target metabolites (lipids, pigments) or proteins by GC‑MS, HPLC, LC‑MS, or enzymatic assays. Culture biomass and media analyzed.

Genetic Stability Assessment

Strains are passaged under non‑selective conditions and re‑evaluated for phenotype and transgene retention. Reports include stability data over ≥10 generations.

What You Receive

Deliverables

Each project concludes with a handoff package containing engineered strains, full analytical data, and a service report.

Engineered Materials

  • Purified engineered algal strain(s) — vial or plate format (quantity scoped per project)
  • Corresponding wild‑type control strain (when included)
  • Plasmid constructs and sequence files (snapgene or GenBank)
  • Glycerol stocks of transformants (when included)

Documentation & Data

  • Methodology report: transformation details, selection conditions.
  • Analytical data: product quantification (GC‑MS, HPLC, or LC‑MS chromatograms and summary tables)
  • Genetic stability report (PCR/sequencing validation across passes)
  • Batch production data from photobioreactor runs (biomass, product titer, productivity)
Project Scoping

Service Scope & Customization

Every project is defined case‑by‑case. The table below lists typical parameters that are scoped during a consultation.

Parameter Typical project scope
Host strain(s) Chlamydomonas reinhardtii (e.g., CC‑124, UVM4), Nannochloropsis oceanica (e.g., CCMP1779, IMET1), or other phototrophic algae as agreed
Genetic edit type Overexpression (gene/cassette insertion), knockdown (RNAi, antisense, CRISPRi), knockout (CRISPR‑Cas9, HR‑based), or knock‑in (precise edits scoped per target)
Target product to be engineered Scoped per project after consultation.
Number of constructs / transformations Typically 1–5 constructs per project; each transformed into 2–3 host strains if needed; higher throughput available on request
Clone screening depth Scoped per project after consultation
Cultivation mode Shake‑flask, 1 L photobioreactor, or custom vessel; phototrophic, mixotrophic, or heterotrophic conditions as scoped
Product analysis package GC‑MS (fatty acids), HPLC (pigments), LC‑MS (metabolites, proteins), enzymatic assays; calibration with commercial standards
Genetic stability study ≥10 serial passages under non‑selective light; re‑testing of product yield and transgene retention; report included
Turnaround time Scoped per project after consultation
Technical support Named scientific contact at project start; milestone review calls; email response within 1 business day
Project Workflow

How It Works

A streamlined, modular process that adapts to your project goals. Each step is executed in‑house and reviewed at milestones.

Project Design & Construct Engineering

We review your target product and proposed pathway, then design custom genetic constructs (promoters, UTRs, selection markers, editing tools). Constructs are assembled and sequence‑verified before transformation.

Algal Transformation & Clone Isolation

Constructs are delivered into your chosen host via validated transformation methods. Transformants are selected on solid or liquid medium containing the appropriate antibiotic. Individual colonies are isolated and expanded.

Genotypic & Phenotypic Screening

Isolated clones are screened by PCR, qPCR, or Southern blot to confirm integration. Top candidates are assayed for target product accumulation using appropriate analytical methods (GC‑MS, HPLC, fluorescence).

Phototrophic Cultivation & Yield Optimization

Selected strains are cultivated in replicate bioreactors or shake flasks under controlled light intensity, photoperiod, CO₂, and nutrient feeding. Growth curves and product titers are measured over a defined time course.

Stability Testing & Final Delivery

The best performing strain(s) undergo serial passaging without selection. After 10+ generations, product yield and transgene presence are.

Application Areas

When to Consider Algal Metabolic Engineering

Our service supports research and early‑stage production across multiple industries.

Lipid & biofuel production

Engineer algae for elevated triacylglycerol (TAG) accumulation or tailored fatty‑acid profiles for biodiesel, renewable diesel, or aviation fuel.

  • Increased total lipid content (>40% DCW)
  • Optimized fatty‑acid chain length (C16–C18)
  • Enhanced EPA/DHA profiles for nutraceuticals

Carotenoid & antioxidant production

Introduce or upregulate pathways for astaxanthin, β‑carotene, lutein, or canthaxanthin to serve the supplement, cosmetic, and feed markets.

  • Heterologous expression of β‑carotene ketolase/hydroxylase
  • Metabolic flux redirection toward ketocarotenoids
  • Analysis by HPLC with commercial standards

Therapeutic & industrial proteins

Express antibodies, enzymes, or growth factors in phototrophic algae. Benefits include low production cost and absence of mammalian pathogens.

  • Codon optimization and ER‑targeting signals
  • Secreted or intracellular formats
  • Western blot / ELISA quantification
Frequently Asked Questions

Common Questions About Algal Metabolic Engineering

We address the most frequent concerns from researchers and biotechnology companies.

  • We have extensive experience with Chlamydomonas reinhardtii (a model green alga) and several Nannochloropsis species (especially N. oceanica and N. gaditana). Other phototrophic microalgae, such as Phaeodactylum tricornutum or Haematococcus pluvialis, can be accommodated after scoping. We will help you select the best chassis for your target molecule.

  • Stability is assessed by serially passaging the best clones under non‑selective conditions (light, CO₂, minimal medium) for generations. We re‑measure product yield and confirm transgene presence by PCR or sequencing. Only strains that maintain ≥ project-dependent performance that is verified during development of the initial phenotype are included in the final deliverable. Polyploid / multi‑nucleate hosts (e.g., Chlamydomonas) are flagged, and stable integration is verified.

  • Absolute yields depend heavily on the target, the host strain, and cultivation conditions (photobioreactor vs shake flask). Our engineering approach aims to achieve industrially relevant improvements, but we cannot guarantee a specific fold‑increase or final titer without a preliminary feasibility study. Acceptance criteria are defined in the project SOW based on your baseline data.

  • Yes, we include in‑silico off‑target prediction for CRISPR‑Cas9 designs. Targeted amplicon sequencing of predicted off‑target loci can be added as a scoped option. We do not currently perform genome‑wide off‑target profiling (e.g., GUIDE‑seq) for algae, as such assays are not validated for these hosts. Off‑target analysis depth is defined at the project scoping stage.

  • Most projects are completed a timeline confirmed during project scoping. Complex projects involving knock‑in of large constructs, multi‑gene pathways, or extensive clone screening may take longer. A detailed timeline is provided in the project proposal before work begins.

Scientific Literature

References

  1. Südfeld C, Pozo-Rodríguez A, Manjavacas Díez SA, et al. The nucleolus as a genomic safe harbor for strong gene expression in Nannochloropsis oceanica. Molecular plant. 2022;15(2):340-353. View on PubMed
  2. Liu M, Yu L, Zheng J, et al. Turning the industrially relevant marine alga Nannochloropsis red: one move for multifaceted benefits. The New phytologist. 2024;244(4):1467-1481. View on PubMed
  3. Gong Y, Kang NK, Kim YU, et al. The NanDeSyn database for Nannochloropsis systems and synthetic biology. The Plant journal: for cell and molecular biology. 2020;104(6):1736-1745. View on PubMed
  4. Südfeld C, Hubáček M, Figueiredo D, et al. High-throughput insertional mutagenesis reveals novel targets for enhancing lipid accumulation in Nannochloropsis oceanica. Metabolic engineering. 2021;66:239-258. View on PubMed
  5. Xu Y. Biochemistry and Biotechnology of Lipid Accumulation in the Microalga Nannochloropsis oceanica. Journal of agricultural and food chemistry. 2022;70(37):11500-11509. View on PubMed

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